package com.itheima.config;

import com.itheima.common.JacksonObjectMapper;
import lombok.extern.slf4j.Slf4j;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;

import java.util.List;

/**
 * @author Gareth Cao
 * @date 2022/4/25 14:29
 */
@Configuration
@Slf4j
public class MyWebMvcConfiguration extends WebMvcConfigurationSupport {
    @Override
    protected void addResourceHandlers(ResourceHandlerRegistry registry) {
        log.info("释放静态资源");
        //pathpatterns指浏览器发送请求的路径
        //ResourceLocations指静态资源存放服务器的地址.
        registry.addResourceHandler("/backend/**").addResourceLocations("classpath:/backend/");
        registry.addResourceHandler("/front/**").addResourceLocations("classpath:/front/");
        registry.addResourceHandler("/doc.html").addResourceLocations("classpath:/META-INF/resources/");
        registry.addResourceHandler("/webjars/**").addResourceLocations("classpath:/META-INF/resources/webjars/");
    }

    @Override
    protected void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
        log.info("这是配置新的消息转换器");
        //获取消息转换器对象
        MappingJackson2HttpMessageConverter messageConverter = new MappingJackson2HttpMessageConverter();
        //设置新的转换对象
        messageConverter.setObjectMapper(new JacksonObjectMapper());
        //添加到转换器集合中并放置到第一位
        converters.add(0, messageConverter);
    }
}
